When Montag comes to Faber, he is super upset and seeking answers for why he feels so miserable all of the time. Faber explains to him all of the reasons that books are so precious. The problem is, people didn't understand how precious they were; instead, they wanted easy answers and mindless entertainment. Essentially, Faber blames us for the books being burnt. He said that "the public itself stopped reading of its own accord," and that firemen weren't really necessary very often. The people didn't rebel that often. They liked not having books They liked not having to think. They liked not having the different judgments and questions that were presented in books constantly worrying their minds.
The books being burnt in the beginning were entirely our own fault. Along those lines, Faber says that true change in their society would be very difficult because "the whole culture's shot through." If you really think about it, of all of the people that we meet in the story, only Clarisse and her family care that books aren't read. Them, and the old lady that dies with her books. Everyone else is complacent and mindless. Faber blames everyone, all of us, for letting things get to the point that they were.
I hope that helped; good luck!